<template>
  <div class="login_container">
    <div class="login_box"> 
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png"> 
      </div>
      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <!-- 用户名 -->
          <el-form-item prop="username">
            <el-input v-model="loginForm.username" prefix-icon="el-icon-user"></el-input>
          </el-form-item>
       <!-- 密码 -->
          <el-form-item prop="password">
            <el-input v-model="loginForm.password" type="password" prefix-icon="el-icon-lock"></el-input>
          </el-form-item>
          <!-- 按钮区域 -->
          <el-form-item  class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>
      </el-form>
        
      
    </div>
  </div>
</template>

<script>
export default {
    name:'Login',
    data(){
      return{
        //这是登录表单的数据绑定对象
        loginForm:{
          username:'admin',
          password:'123456'
        },
        //这是表单验证规则对象
        loginFormRules:{
          //验证用户名是否合法
          username:[
            { required: true, message: '请输入登录名称', trigger: 'blur' },
            { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
          ],
          //验证密码是否合法
          password:[
            { required: true, message: '请输入登录密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
          
          ]
        }
      }
    },
    methods:{
      resetLoginForm(){
        this.$refs.loginFormRef.resetFields();
      },
      login(){
        this.$refs.loginFormRef.validate(async valid =>{
          if(!valid) return;
          const {data : res}=await this.$http.post("login",this.loginForm);
          if (res.meta.status !== 200) {
            this.$message.error('登陆失败');
          } 
          else {
            this.$message.success('登陆成功');
            window.sessionStorage.setItem("token",res.data.token);
            this.$router.push('/home');
            
          }
          
        });
      }
    }
}
</script>

<style  scoped>
.login_container{
  background-color:#1e86ee;
  height: 100%;
}
.login_box{
  width: 450px;
  height: 300px;
  background-color: #eee;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box{
  width: 130px;
  height: 130px;
  border: 1px solid;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #eee;
  position: absolute;
  left: 50%;
  transform: translate(-50%,-50%);
}
.avatar_box img{
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #eee;
}
.btns{
  display: flex;
  justify-content: flex-end;
}
.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 20px;
  box-sizing: border-box;
}
</style>